Complete first project

1_Boolean_Arithmetic/Or8Way.hdl

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+// This file is part of www.nand2tetris.org
+// and the book "The Elements of Computing Systems"
+// by Nisan and Schocken, MIT Press.
+// File name: projects/1/Or8Way.hdl
+/**
+ * 8-way Or gate: 
+ * out = in[0] Or in[1] Or ... Or in[7]
+ */
+CHIP Or8Way {
+    IN in[8];
+    OUT out;
+
+    PARTS:
+    Or(a=in[0], b=in[1], out=x1);
+    Or(a=in[2], b=in[3], out=x2);
+    Or(a=in[4], b=in[5], out=x3);
+    Or(a=in[6], b=in[7], out=x4);
+    Or(a=x1, b=x2, out=y1);
+    Or(a=x3, b=x4, out=y2);
+    Or(a=y1, b=y2, out=out);
+}